Atmospheric Processing of Loess Particles in a Polluted Urban Area of Northwestern China
文献类型：期刊论文
| 作者 | Chen, Yang2,6,7; Liu, Huanwu3; Huang, Ru-Jin6,7; Yang, Fumo1; Tian, Mi2; Yao, Xiaojiang2; Shen, Zhenxing5; Yan, Lulu4; Cao, Junji6,7 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
 |
| 出版日期 | 2019-07-27 |
| 卷号 | 124期号:14页码:7919-7929 |
| 关键词 | dust processing single particle urban aging loess |
| ISSN号 | 2169-897X |
| DOI | 10.1029/2018JD029956 |
| 通讯作者 | Yang, Fumo() ; Cao, Junji(cao@loess.llqg.ac.cn) |
| 英文摘要 | Loess is an important dust component of airborne particles in Northwestern China. Knowledge of the chemical composition, mixing state, and processing of loess particles in urban plumes is still limited. Urban loess particles were characterized using a single-particle aerosol mass spectrometer. To understand sources and processing of loess particles, source samples from the road, urban background, soil, construction, and biomass burning ash were collected in the urban areas and characterized. Loess particles were determined as a kind of calcium-silicate-rich ones, which were internally mixed with calcium, silicates, potassium, elemental carbon, organics, ammonium, sulfate, and nitrate. Road and soil were major sources of loess particles. Among the aged loess particles, the average peak areas of taken-up nitrate and sulfate were comparable to that of (Fe+Ca+Al). Diurnal uptake profiles of chloride, sulfate, oxalate, and nitrate on loess particles were analyzed. The nocturnal elevation of chloride occurred significantly due to the uptake of HCl (g). Nighttime nitrate formation occurred prevalently under high relative humidity conditions via the heterogeneous hydrolysis of N2O5. The nighttime enrichment of oxalate, which is a marker for aqueous-formatted secondary organic aerosol, was also found. Besides the nighttime chemistry, the daytime photochemical activities were also a drive for the elevations of sulfate, nitrate, and ammonium. Conclusively, the processing of loess particles in polluted urban plumes significantly altered their chemical composition and mixing state. |
| WOS关键词 | SECONDARY ORGANIC AEROSOL ; MIXING STATE ; MINERAL DUST ; CHEMICAL-CHARACTERIZATION ; HETEROGENEOUS CHEMISTRY ; INDIVIDUAL PARTICLES ; MASS SPECTROMETERS ; SINGLE PARTICLES ; WATER-ADSORPTION ; GUANZHONG BASIN |
| 资助项目 | National Natural Science Foundation of China[41703136] ; National Key Research and Development Program of China[2016YFC0200405] |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000481444200027 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 资助机构 | National Natural Science Foundation of China ; National Key Research and Development Program of China |
| 源URL | [http://ir.ieecas.cn/handle/361006/13626]  |
| 专题 | 地球环境研究所_粉尘与环境研究室 |
| 通讯作者 | Yang, Fumo; Cao, Junji |
| 作者单位 | 1.Sichuan Univ, Natl Engn Res Ctr Flue Gas Desulfurizat, Sch Architecture & Environm, Chengdu, Sichuan, Peoples R China 2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing, Peoples R China 3.Xian Environm Monitor Stn, Xian, Shaanxi, Peoples R China 4.Xian Univ Architecture & Technol, Dept Environm & Municipal Engn, Xian, Shaanxi, Peoples R China 5.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian, Shaanxi, Peoples R China 6.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian, Shaanxi, Peoples R China 7.Chinese Acad Sci, Inst Earth Environm, KLACP, Xian, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Yang,Liu, Huanwu,Huang, Ru-Jin,et al. Atmospheric Processing of Loess Particles in a Polluted Urban Area of Northwestern China[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(14):7919-7929. |
| APA | Chen, Yang.,Liu, Huanwu.,Huang, Ru-Jin.,Yang, Fumo.,Tian, Mi.,...&Cao, Junji.(2019).Atmospheric Processing of Loess Particles in a Polluted Urban Area of Northwestern China.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(14),7919-7929. |
| MLA | Chen, Yang,et al."Atmospheric Processing of Loess Particles in a Polluted Urban Area of Northwestern China".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.14(2019):7919-7929. |
入库方式： OAI收割
来源：地球环境研究所
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